The revenue whine is old and, for most places, completely untrue. I have studied the budgets of many Texas cities, and ALL court finess collected amount to from less than one to at five percent of budget revenue.
It's only a means for the guilty to justify their actions in breaking the law. It's never their fault, the blame has to be shifted to someone else. God forbid they actually man up and be accountable for what they did!
No, it's revenue generation. Or entrapment. Or the speed limits are set artificially low. I've heard them all, and they're all bullshit.
It's pathetic.